Magnet carrier for electromagnetic talking machines



1,638,999 Augf 1927 w, HoRNAuER KAGNET CARRIER FOR ELEGTROIAGNETIC TALKING IACHINES Filed June 20, 1925 Y In ren/'0 C' W, '/f Hornauer,

Patented Aug. 16, 1927.

UNITED STATES PATENT GFFICE.

WILLY HORNATJ'ER, 0F NEUKOLLN, GERMANY, ASSIGNOB TO TELEGRAmE-GE- SELLSCHAFT MIT BESCHRNXTER HAFTUNG SYSTEM STILLE, OF BERLIN, GER- MANY.

MAGNET CARRIER FOB ELECTRYOMAGNETIC TALKING MACHINES.

Application led June 20, 1925, Serial No. 38,558, and in .Germany .'l'uly 8, 1924.

This invention relates to an electro-magnetic talking machine of the kind in whichl the `record .is impressed magnetically on a steel wire which passes through a magnet box as ,it is wound from one spool to another.

The object of the invention is to produce a carrier for the magnet box which enables the latter to participate in the changes which the position of the wire undergoes as it traverses the spools and as one spool grows while the other is diminished.

This object is achieved according to the invention by the provision of a traverse mechanism on. which the magnet box is swivelly held in a pivoted arm so that it can follow the traversing movements of the Wire and at the same time turn about its point of support and shift laterally together with the latter. h

Fig. 1 of the accompanying drawings is a diagram showing the spools and two different positions of the magnet box,

Fig. 2,. a plan of the magnet box and the carrier arms, and

Fig. 3, a side view of the mechanism, .partly in section.

The record wire D moves from one to the other of two spools A and B and .changes its position gradually; as indicated in Fig. 1, as one spool grows and the other is diminished. At the same time the wire traverses thesp'ools to and fro in the axial direction of the same.

r1 oenable the magnet box C to changeits position accordingly, it -is mounted by means of trunnions E in a fork The latter has a. pivot pin G whereby it is swivelly held in a socket H at the free end o This arm has at the opposite en a 'socket' L whereby it is pivotally held on a pin- M risan. arm J.-

img from a carrier N which reciprocates, as lndicated by the arrows S, on a vertical spindle O under the inuence of a heartshaped cam P, the carrier N being supported also changes its angular osition a out the pivot G, as indicated in ig. 2 by the lines 1,'II and 111,

I claim:

1. In an electro-magnetic talking-machine of the character described, the combination' with a ma net box and a record wire passing throng said magnet box from one spool to another, of a' traverse mechanism, and means for supporting the magnet box on said traverse mechanism so that it can turn about its supporting point and shift together with the latter in a plane at right angles to the traversing movement substantially as and for the purpose set forth.

2. In an electro-magnetic talking-machine of the character described, the combination with ama net box and a record wire passing throng said magnet box from one.,spool to another, of a. vertically adjustable carrier, a heart-shaped cam supporting said vcarrier so as to reciprocate the sameon being rotated, an arm pvoted to said carrier,

and a fork swivelled to the free end of said arm and holding said magnetbox so that the latter can f of the wire.

WILLY HORNAUER.

llow thechanges in the position 

